An identification method of soybean protein isolate based on electronic tongue
A soybean protein isolate and identification method technology, applied in the field of biological sample identification, can solve the problems of long time consumption, high detection cost, poor repeatability, etc., and achieve the effect of accurate repeatability and high discrimination index
Active Publication Date: 2018-06-12
QILU UNIV OF TECH
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Problems solved by technology
[0005] In order to make up for the deficiencies of the prior art and solve the problems in the prior art of large subjective influence on the identification of soybean protein isolate, poor repeatability, high detection cost, long time consumption, and complicated sample pretreatment, the present invention provides a fast and accurate , Soybean protein isolate identification method based on electronic tongue with good repeatability
Method used
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Embodiment 1
[0024] Samples: Seven different soy protein isolate (SPI) samples.
[0025] Sample 1: Soy protein isolate with low fishy smell, high stability and high dispersion;
[0026] Sample 2: low fishy smell and high dispersion soy protein isolate;
[0027] Sample 3: Dispersed Soybean Protein Isolate Ⅰ;
[0028] Sample 4: Dispersed Soybean Protein Isolate II;
[0029] Sample 5: gel-type soybean protein isolate;
[0030] Sample 6: low-sodium soybean protein isolate;
[0031] Sample 7: Highly stable and highly dispersible soybean protein isolate.
[0032] Instrument: SmarTongue electronic tongue.
[0033] The electronic tongue adopts the system's own principal component analysis method and discriminant function analysis method to analyze the data collected by the sensor of the electronic tongue.
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Abstract
The invention discloses an electronic tongue-based soybean protein isolate identification method, and belongs to the technical field of biological sample discrimination. A soybean protein isolate sample is identified through adopting a plurality of inert metal sensor combinations of an electronic tongue. Different sensor combinations have different distinguishing effects on SPI, the distinguishing effect of a sensor and pulse frequency combination selecting a mixed electrode is obviously better than that of single sensor detection, selected mixed sensors are S1-1HZ, S2-10HZ and S5-1HZ, that is, the sensor combination comprises a platinum electrode 1Hz, a gold electrode 10Hz and a tungsten electrode 1Hz, and the DI value of the sensor combination is highest and reaches 95.12%. An electronic tongue-based main component analysis method and a discrimination function analysis method can be well applied to distinguishing and discriminating researches of different SPI samples, and have wide prospect.
Description
technical field [0001] The invention relates to the technical field of identification of biological samples, in particular to an identification method for soybean protein isolate based on an electronic tongue. Background technique [0002] Soybean protein isolate is a kind of complete protein food ingredient produced from low-temperature desolvated soybean meal. The protein content of soybean protein isolate is more than 90%, there are nearly 20 kinds of amino acids, and it contains essential amino acids for human body. It is rich in nutrition and does not contain cholesterol. It is one of the few varieties of vegetable protein that can replace animal protein. widely. Soybean protein isolate is mainly used as a food ingredient and has a wide range of uses. However, the quality of the products obtained due to different sources of raw materials and processing techniques is also different. Some products have strong odor components, which limits the application of the product. ...
Claims
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IPC IPC(8): G01N27/27
CPCG01N27/27
Inventor 张志国田鑫孙迪陈媛李晶
Owner QILU UNIV OF TECH